We wanted to keep the suspension low and simple. Rather than weld a shackle hanger on the bottom of the framerail, we used a 1 3/4-inch holesaw to pierce the boxed frame into which a 2 3/4-inch-long section of 1 3/4-inch, 0.120-wall tubing was welded. Standard 1 1/2-inch-diameter poly bushings can then be inserted. To determine the where to drill, we hung a single shackle on the spring and swung it up into place near the frame until the shackle was hanging around 45 degrees forward at full droop.